Picker-check.



I. WHITWORTH.

I PIGKER CHECK. APPLICATION FILED DEC22. I914.

Patented Nov. 23, 1915.

c LUMBIA PLANOORAPN c0 WASHINGTON, D.

barman i JESSE wnitrwonrn, or LAWR NCE, a'ressacrinsnrrs, ASSIGNOR To JAMES K. I

' 'LANNING, onrannaivna, MASSACHUSETTS.

",frIoKnn-cimoK.

To all whom it may concern: 1

Be it known that I, Jnss'n VVHITWORTH, a

nection with the accompanying drawings, is i a. specification, like characters on the draw} ings representing like parts.

This invention relates to picker checks. 7 In order that the principle of theinvention may be readily understood, I have disclosed a single embodiment thereof in the accompanying drawing, wherein+ Figure l isa front elevation of a loom having my invention applied thereto; Fig. 2 is a detail in front elevation on a larger scale showing my improved picker check; Fig. 3 is an end elevation of the construetion shown in Fig. 2; and Fig. 4: is a cross section on the line 4t4 .ofFig; 2. Y

An important object of my invention'is to provide a picker check constructed and arranged to hold the picker accurately in its outward position in contact with the point of the shuttle, so that upon the inward throw of the picker stick, the shuttle is at 7 once thrown by the picker stick without lost motion. v Other objects of the invention will be I fully set forth hereinafter.

My improved picker check may be applied to any type of loom. having picker sticks. I have herein shown a conventional loom having a frame 1, a race 2, and picker sticks 3. The picker sticks are adapted to be rocked in any suitable manner, and to that end are herein represented as provided with shoes 4:. The picker check here shown is composed of a plurality of parts, at least one of which is mounted upon the lay and at least one of which is mounted upon the picker stick. I have herein represented each end of the lay and each picker stick as provided with cooperating parts, together constituting complete picker checks.

Adjacent each outer end of the lay I have mounted a member 5 in any suitable man.- ner, as by means of screws or bolts 6. Each member is provided with a resilient extension or prolongation 7 which extends as shown in a path substantially parallel to the p ath'of the picker stick and in such posi tion as to be engaged or contacted with by a 77 Specificationof Letters Patent.

Patented Nov. 23, 1915.

. Application filed. December 22, 1914. Serial nms'zassa part or member formed upon or carried by the picker. stick. The saidmember 5 and its prolongation 7 may be formed of any suitable material, but preferably I form the same ofsome hardwood, inasmuch as eX- periments have shown that the proper de gree 'of friction is best given thereby. "In order to strengthen the prolongation 7,, I

preferablyv provide thesame with a fillet 8.

at its inner end.

In the preferred embodiment ofmy invention, I secure upon each picker stick.3 a 1 member which, in the normal movement'of the picker stick and near its outer limit of its throw, is adaptedto contact with the 'prolongation 7 and by, reason of the frictional engagement therewith to bring the picker stick toa position of rest with the point of the shuttle in contact therewith. While for this purpose, the pickerstick may have a 13. In order effectively to hold thes'aid bolts in position, I preferably provide a bolt 14 having a head 15 and a threaded end upon which is mounted a nut 16. In this or in any other suitable manner, the member 9 may besecured at the desired height upon the picker stick, so as in the outer swing of the picker stick to contact therewith shortly before the picker stick reaches the outward limit of its throw. The adjustment of the member 9 may be such that it rides along the under face of the prolongation 7 "without substantial flexing of the latter, but with suiiicient friction to bring the picker stick to a position of absoluterest at a predetermined point. If desired, the said member 9 may be so positioned that when it contacts with the prolongation 7 it flexes the and relation of parts are such that the mem v ber 9 contacts with the under side of" the prolongation 7 when said partsare in a position at substantially right angles tb each other. Not only does the picker stick function as stated, but italso holds the shoe 4 of the picker stick in properposition with re-- spectto its support. I

Viewing particularly Figs. Sand l, it will be observed that the member 5' with its prolongation 7 is so positioned with respectto the stud or pin 9 as to permit lateral cen tering movement of the picker stick 3 with respect to the shuttle. This permits the accuratev throw of. the shuttle. In order to secure the best results, it is importantthat 7 the picker stick be not directly. engaged at either face .thereof by a checking device, as the result would be to deflect the picker stick laterally and thus to move it out. of

proper relation to the shuttle. In the disclosed embodiment of my inventionthe frictionally engageable members 7 and 9 are so related as to permit self-adjusting, lateral movements ofthe picker stick.

In the disclosedembodiment of the invenv "Thus, the picker check not only permits in operation lateral centering. action of the picker stick, but 'pressure is transmitted downwardly to thepicker stick.

i bodiment-"of my invention, I desire it to be A" picker stick constructed. in accordance with my invention is of exceedingly simple character andiof few parts, but in practice brings the picker stick to a positionof ab-.

solute rest at a predetermined point and with'the point of the shuttle in contact therewith.

.plaviiig thus described one illustrative em understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of liinitation', the scope of the invention being set forth in the following claims.

Claims:

1. In a loom, a lay, a picker-stick, and frictionally acting V picker check. therefor comprising two members respectively mounted upon the lay and the picker stick, the member on the picker stick having a surface extending in a. direction laterally away from said stick and the member on the lay extendingv fromthe latter and to frictionally engage said laterally extending surface.

comprising two 7, members surface extending] in a direction laterally away from the said stick and the member on the lay extending from the latter "toward theoi'iftward position ofsaid stick,'to fric' gage therewith.

the pickerstick.

2. In a loom, alay, a picker stick, and a frictionally actingpicker check therefor V respectively mounted'upon the lay and the picker stick, the member on the picker stick having a anupwardly facing surface of said picker tionallyengagesaidsurface and to be upwardly flexed by said frictional engagement. In a loom, a lay, a picker stick, and a frictionally, acting picker check therefor comprising two members respectively 79 mounted upon the lay and the picker stick,

the .mernber on the picker stick extending substantially horizontally transversely to the path of movement of the stick and the member on the la' 'bein )os itioned to en a e a substantially horizontal face of said trans- -.-versely extending member.

l. In a loom,a lay, a picker stick and a frictionally acting picker check therefor comprising two, members respectively mounted upon the lay and the picker stick,

- the member on the picker stick being positioned under the member on the lay and having a pathof movement that intercepts said member on the lay so asfrictionally to en-' 5. In aloe-m, a lay, apicker. stick and a frictionally acting picker check therefor comprising. two members respectively mounted upon thelay and the picker stick,

the member on the picker stick being positioned under the member on the lay and ha ing a path of movement that intercepts said member on the lay near the limit of outward movement of'the stick, so as frictionally to 9 engage therewith, G. In a loomfa lay, a picker stick, and a frictionally, acting picker check therefor comprising two members respectively mounted upon the layand the picker stick; 199 the member on the lay having a head 5. secured to'the lay and flexible extension '7 and the member on the picker stick being positioned to engage said extension 7.

7. In a loom, a lay, a picker stick, and a frictionally acting picker. check therefor member upon the lay being flexible, and said members being so located that ,whenfrictionally engaged said lay member isupwardly flexed.

8. In a loom, a lay, a picker stick, and; a frictionally acting picker check therefor comprisingtwo members respectively mounted upon the lay and the picker stick, the member upon the lay being above that on the picker stick, and said members being so located that when frictionally engaged donwnward pressure is thereby imparted to erally therefrom and themember onthe lay being-so positioned as frictionally to engage stick member.

I comprising two members respectively mounted upon'the lay and-the picker stick, saidmembers being so positioned as frictionally to engage each other, the member on the lay extending at a downward inclination and being flexible upwardly.

, 12. In a loom, a lay, a picker stick, and a frictionally acting picker check therefor comprising two members respectively mounted upon the lay and the picker SillCk, the member on the plcker stick having a' surface extending in a direction laterally away from said stick and the member on the lay extending from the latter and to frictionally engage said laterally extending surface, and means relatively to adjust said two members.

13. In a loom, a lay, apicker stick, and a frictionally acting picker check therefor comprising two members respectively mounted upon the lay and the picker stick, the member on the picker stick extending transversely to the path of movement of the stick and the member on the lay being positioned to engage frictionally the upper face of said picker stick member, and means relatively to 1 adjust said two members.

, I I. In a loom, a lay, a picker stick, and a frictionally acting picker check therefor comprising two members respectively mounted upon the lay and the picker stick, the

member on the lay being flexible and posi- 'tioned to be engaged and upwardly flexed" by the member onthe stick, said lay member being non-concentric with the pivot of the picker stick, whereby said members frictionally engage near the termination of the out- Ward throw of the picker stick.

15. In a loom, a lay, apicker stick, and a frictionally acting picker check therefor comprising two members respectively mounted upon the lay and the picker stick, said members being positioned to be frictionally engaged during the movement of the picker stick and said lay member being laterallyspaced from the path of movement of the picker stick.

comprising two members respectively mounted upon the lay and the picker stick, said lay member being mounted. for a movement ber onthe picker stick being mounted frictionally to' engage therewith, and thereby to impart said movement of fiexure thereto in said plane.

p 17. In a loom, a lay, a picker stick, and a frictionally acting picker check therefor comprising two members respectively mounted upon the lay and the picker stick, one of said members'being'mounted' for a movement of fiexure in a vertical plane, and the other member being mounted frictionally to engage therewith and thereby ,to impart said movement of flexure in said plane.

In testimony whereof, I have-signedmy name to this specification, in the presence of two subscribing witnesses.

JESSE WHITWORTH.

WVitnesses:

ALFRED R. T. NEEDHAM, EVERETT S. EMERY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. j

16. Ina loom, a lay,'a picker stick, and a frictionally acting picker check therefor of fiexure in a vertical plane, and the'mem 

